[galyc4]

Does putting a disc under the main spring in the handle take up that slack in the trigger, and make it a more positive pull. Instead of squeeze fire slack.

 

[mustang69]

It may but ya have to be careful!!!!sometimes folks file the disc too thin or have it too thick and that ain't good...I don't recommend it but if you do it, try a normal small washer and play with trigger pull.(unloaded chamber of course)...

 

[galyc4]

Thanks

 

[jleiper]

Using a bullet under the lower leaf of the spring doesn't change the slack, it just reduces the load on the spring against the trigger. The nice thing about using a bullet is that it can be squeezed to change the load without having to file. The Russians/Soviets used this system extensively so it definitely works!

A 1926 Short revolver and a 1923 target. The target gun has had the spring thinned as well as the "squeezed" bullet.
Joe

 

[cuate]

Thats great, showing with pictures where a nut, washer, bullet or whatever works lessons trigger pull. My two Nagants have a #312 hearing aid battery laying flat in that spot pictured and they worked for me.

 

[popgun]

nice tip thankx

 

[Zer0DazE]

Using a bullet under the lower leaf of the spring doesn't change the slack, it just reduces the load on the spring against the trigger. The nice thing about using a bullet is that it can be squeezed to change the load without having to file. The Russians/Soviets used this system extensively so it definitely works!


View attachment 523620 View attachment 523621
A 1926 Short revolver and a 1923 target. The target gun has had the spring thinned as well as the "squeezed" bullet.
Joe

This is interesting. I have seen the washer/nut trick, and I have used nylon spacers in the past. Last year I bought a handful of extra main springs and thinned them from the sides to see how light I could get the trigger and still have reliable strikes. I found that anything more than about a 15% reduction and the double action wouldn't be reliable. I was able to take a little more than 20% off and still have a reliable single action trigger.

I am going to have to give this bullet trick a try.

 

[jleiper]

Thin the main spring by grinding down the thickness of the lower spring, not the width. I've never heard of anybody doing it that way and getting a reliable DA pull. The upper leaf is left alone - that insures reliable strikes.
Joe

 

[Zer0DazE]

Joe, I was taught that the proper way to lighten a spring is from the sides to make it more narrow, and not to attack the top or bottom. However, the reason the smith gave escapes me.

 

[jleiper]

The methods I use on these were perfected by a Soviet gunsmith named Danilov. He was the gunsmith for the Soviet international shooting teams in the late 1950s into maybe the 1970s(?). He published books with recipes to correct all kinds of problems with all kinds of target guns. I keep threatening to publish his piece on the Nagant, but haven't gotten it completely translated due to other priorities. In any case the lower spring should be altered in thickness according to Danilov. What do I know?
Joe

 

[Zer0DazE]

That is interesting. How much material does the book suggest removing? I had thinned 2 springs in that manor and had issues with both, with one of them actually breaking. I have a feeling I may have removed too much material too quickly causing the problems. That was when I consulted a smith I have used for years who suggested thinning the spring from the sides. I haven't had any issues yet with it, but I also didn't allow the spring to get too hot.

I did this bullet trick on a gun with a lightened trigger, and wow. I have a couple of extra springs around and would like to try thinning them as you described.

edit:
I have been staring at the two pictures you have posted for a while now. The first gun appears to have had the lower leg thinned in the center; however, the spring in the second picture does not have the same work done to it. It looks as though the second spring was thinned near the tip. Am I correct or have I been staring at this screen too damn long?

 

[45autorim]

I tried the bullet fix under the mainspring ( 30 cal) and didn't notice much difference, if any. I normally shoot mine single action anyway. I think stripping the action down and giving it a very thorough cleaning along with stoning off any burrs worked best.

 

[The Teacher]

Any thoughts on stiffening a lightened mainspring? The mainspring on my target revolver was thinned by someone prior to my ownership and now has very light primer strikes. It won't ignite but one out of seven with Prvi Partisan ammo. Fiocchi is a little better, but still misfires on half of them. And even the B-1 target ammo has issues.

 

[jleiper]

Replace it. A correctly thinned lower leaf only really reduces the load in double action. If it has been thinned too much there is no way to "un do" it.
Joe